Pile-wire-carriage-controlling means for pile-fabric looms



March 5, 1929. w, STONE 1,704,521 '1 FILE WIRE CARRIAGE CONTROLLING MEANS FORUPILE FABRIC Looms' Filed June 26, 1928 2 Sheets-Sheet 1 ATTORNEY Marcus; 1929'. E. w. smE 1,704,521.

FILE WIRE CARRIAGE CONTROLLING MEANS FOR FILE F ABRIC LOQMS Filed June 26, 1928 2 Sheets-Sheat A T-TORNE Y Patented Ma. 5,1929. 4 1,204,521

ET D 5' M retest-e FF WE;

EDWIN w. STONE, or LONGMEADOW, MAssAoirUsE'Trs,"nssrsnos To tr nsom-ram v onn oaiarnr COMPANY, or THOMPSONVILLE, oonivnorrour, A oonronarrolv'on' MASSACHUSETTS. 7

FILE-WIRE-GARRIAGE{CONTROLLING inserts son mien-Fannie Looms,"

' Application filed June 2c, 1928. Serial 1%. 288,344. i i

This invention relates to pile fabric looms madeclear from the following description and is more particularly directed to meansand the accompanyingdrawings:of one good for controlling the pile wire carriage at the form thereof. 1 1 a Y v 55 end of its travel that the loom may berun In the drawings: 1 1 v 5 t high speed. Fig. l-is'a side elevation at one'end'ota In looms for weaving pile fabrics, such as pile fabric loony-showing more particularly carpets, rugs, and the like, the pile forming the pile wire carriage controlling means and wires are successfully inserted in' 'the shed by the invention associated therewith Y i f '60 a rope motion wherein a rope is connected at Fig. 2 is a plan view'showing the pilewire 10 one endto the'carriage and its opposite end carriage as in the act of inserting apile wire" is engaged "by a spirally grooved ropewheel in the pile shedq" I which is intermittently driven and released. v Fig. 3' is an enlarged detail, partsbeing The pile forming wires are withdrawn shown insection, and illustratingone'good from the pile loops by a chain motion wherein practical form. of theinv'ention; I 7

15 the chain-is continuously driven in a direction F 4 is a detached perspective detail of to withdraw the pile wires from the fabric theplunger, and H T and is provided with catches or similar de' .Fig. 5 is a sectionof thelii1e5-5of Fig. vices whereby the pile wire carriage may be In a pile fabric loom such as herein illns 70 connected to the-chain and released from-it; trated, the .pile wires are inserted and with at the endot the carriage travel. The car-' drawn at one s'ideof'the loom,' and extend- ,riage itselr" is provided'with devices for ening laterally from the si'de ot' the loom frame gagingthe end'pf the pile wires to effect their is the pile wire carriage frame and the car? I insertion and withdrawal. 1 riage operating mechanism; 5 I 1 75 'The constantly increasing demand 7 for "Referring to Fig. 1 t the drawings, a por-q wider pile fabrics, suchas carpets, rugs, and tion of the loom frame is" shown at 1- and ex the like, has introduced problems relative to tending laterally therefrom is the carriag'e the 'co'ntrolofthe carriage motion. 1 On the framev Qwhich may be of a ny'suitable conone hand, the wider fabricsnow demanded struction for the support of the'associated 80 have slowed up the out-put capacity of the parts. 1 I I wide pile fabric looms by reason of the in- Extending len'gthwise ct thecarriage frame creased length of the pile wires and thein- 2is the carriage trough 3which serves asa creased travel of the pile wire carriage and guidewayffor the carriage-4t dnring'its-recip' weight of the parts; and, on the other hand," rocating movements towards and from the 85 any attempt to increase the speed of the pile selvageof the cloth. Mounted at the outer I wire carriage to facilitate economic produc end portion of the carriage frame forswingtion has introduced problems of carriage coning movement about the pivotal connection 5 v 1 I trol, especially at the end of the carriage is the pilewiretrough6,.and means are protravel. E i .vided, as usual in thistype'of loom,' to move 90- One of the objects ofthe present invention, the pile wire trough 6 about itspivotal con-- 40 tl1erefore, is to provide means whereby the nection with'the carriage frame to receive ,a-

pile wire carriage may be reciprocated at pile wireas-it is withdrawn't'rom-thefabric -;jhigl11speedand yieldingly checkedat the end" and then move into a' position rearward, as 11 of its travel to avoid injury to the associated indicated in Fig. 2, -I"or the insertion of the 195 parts. r withdrawn pile wire into the pile tormingj'f. Morespeciiically stated, the invention proshed, it being understood, of course, that the vides a dash-pot and plunger arrangement carriage 4 is provided with suitable devices- .flocated adjacent the end of the pile wire car-, now well-known in the art for-engaging the' riage travel and'adapted tobe actuated by the end of a pile wire to withdraw it from;the "10o carriage as it approaches the end of its travel fabric and insert' it in the shed. 5 i to thereby yieldingly arrest its movement. The'carriaget has connected to it the rope:- The invention and novel features thereof motion, comprising the rope or flexible-com .and new combination ofparts will best be n'ector' 7 which passes about a g'uidepulley8;

adjacent the loom side and has its end secured to the rope wheel 9 which is spirally grooved or formed with. a scroll, as usual. Mounted on the carria e frame is the sprocket wheel 10 which may be continuously driven from asuitable source of power, and passing about the sprocket wheel 10 is the sprocket chain 11 provided with projections 12 at intervals. .The sprocket chain 11 is the element that withdraws the. pile wire from the fabric bymove-ment of the pile wire carriage 4 outwardly,and,as indicated,it is guided about suitable guide pulleys or sprocket wheels 1.3 to direct the upper run of the chain in the lower part of the carriage trough 3. The pro- '1 jections 12 are adapted to engage suitable trip devices on the pile wire carriage. to move it 7 outwardly in the pile wire trough or guide and then trip or release the carriage for its inward pile wire inserting'movement under the influence of the rope motion. It will not be necessary to describe in detail the various means for actuating the rope motion and the chain motion, nor the devices for tripping the carriage from thecham at the end of 1ts outward movement, since these form no es' sential part of the present invent-ion.

. Rising from theinner end portion of the carriage frame is the bracket 14 to the out wardly extending arm15of which is 'piv-- 1 otally secured at '16 the friction shoe'17 normally under the influence of a spring or ,springs 18 acting. downwardly, as shown.

"tion of the friction shoe 17, the construction being such that as the pile wire carriage 4t I be employed to bring the carriage yieldingly' Thespring or springs 18 may be variously contrived, but: in the present instance of the lnvention 1t, or they, surround a limiting pin 19 which is secured to the inner end porapproaches the inner end of its movement towards the cloth selvage, a shoe20' on the-- carriage 4 passes beneath the friction shoe 17 and'tends to check its inward movement. The construction thus far described may be; advantageously employed in weaving the narrower pile fabrics, such as carpets and rugs, but where the loom is "increased in width to produce the wider grades of pile carpets'and rugs, or is to be run at high speed, it is necessary that additional means to. rest at the endof its movements.

p The movement of the pile wire carriage to insert a pile wire in the shed may be ad-' vantageously made at high speed, but in ,1 withdrawing-the pile wire from the cloth too. high speed of withdrawal is liable to injure the fabric by charring or, burning, Whether the pilewire he of the cutting or non-cutting type. Under these conditions the; present invention contemplatesin the first place that the high inserting movement of the pile wire carriage shall be yieldingly checked near the end of its inward movement, and, insome cases, it may also be desirable to provide the same character of yielding check for the carriagexat the terminal portion of its outward movement, as indicated by Fig. 1. T p

Mounted in fixed position below the carriage trough 3 near its inner end is the dashpot 21 and, as 'shown,'the dash- 013 21 may be secured in such fixed position by a sleeve portion 22 secured to the dash-pot in a proper manner as by screws 23. .The sleeve 22 has extended therefrom the arms 24 which may bese'cured to the side frame of the loom by bolts 25. The dash-pot 21 is preferably lined by a cylindrical portion 26, andmounted for reciprocating movementin the dash: pot is the plunger 27 which is constructed and arranged to be actuated by the pile wire carriage 4 as the latter approaches the inner end of its movement, as will more fully appear.

mounted at 30 between the carriage trough 3 and the stem 28. of the lever '29 extends across the path of travel of the carriage 4:,7as indicated at 31,,

As indicated in Fig. 3, the plunger 27 has the. plunger stem 28 extending therefrom. 'and its. outer portion is connected .by a slot. and pin device with a lever 29' pivotally The upper end portion the construction being such that when the carriage 4 is approaching the end of its inward movement it will engage the'upper end portion of the lever 29 and effect inward movement of the plunger relative to the dashpot. I

. The lower end portion ofthe lever 29 is preferably provided with a slot 32 into which projects apin 33 extending from the stem 28, toprovide suflicient motion between the of the fluid or air may be regulated to suit the conditions of use and speed checjk desired for the pile wire carriage. p I

Th plunge 7 1S provlded w h an a to matically controlled inlet, and, as shown in the present instance of the'invention, the plunger 27 is provided with an opening 37 at one side of the stem 28 or. eccentric thereto,

wherein is located a valve which will be. auto} matically seated to prevent the escape of air or fluid as the plunger moves inwardly and will automatically open to permit inflow of air or fluidto the dash-pot when the plunger is moved outwardly. Inthe present instance of the invention, the automaticvalvc is constituted as a ball valve,-the ball 38 of which may be seated, as indicated in Fig. 3, as the plunger moves inwardly, to thereby prevent the outflow. of air or fluid, and will move described.

Interposed between the inner end of the plunger and the opposed wall of the dash-pot is a conicalspring 42 which is of sufficient strength to'move the plunger outwardly into its initialposition, as indicated by full lines in Fig. 3, when the upper arm of the lever 29 is freed from contact with the pilerwire car riage. By forming the spring. 42 conical, as indicated, it may be conveniently compressed within its elastic limits inside the dash-potto I as the plunger moves inwardly, the coils of,

occupy little space at the end of the dash-pot the conical spring at such time seating themselves one within the other.

'- As the pile wire carriage a is positively moved inwardly to insert apile wire at high speed,'it will engage the upper portion 31of the check lever 29 and force the plunger inwardly relative to the dash pot, At such time the air within the dash-potis allowed to es-' cape atthe'desired rate by the needle valve 35 which may be so regulated as to effectively bring to rest and overcome the momentum of the carriage at as it approaches its inward position. At such times, also, the conical spring 42 will be compressed, while the ball valve in the plunger will be seated to prevent the escape of air or fluid. When the pile wire carriage is moved outwardly by the chain mechanism to withdraw a pile wire from the fabric, it will release the upper end of the check lever 29, let the spring expand and move the plunger outwardly to thereby unseat the ball valve, and permitfinlet of air or fluid to the dash-pot.

By virtue of the above construction for overcoming the momentum of the pile wire carriage and pile wire it is ossible to run the pile wire carriage for the insertion of a pile Wire in the shed at increased speed, because the checking movement of the carriage at the inward end of its travel is sufliciently yielding to prevent injury to the parts or possible disarrangement between V the pile wire carriage and pile wire as might happen should the carriage be suddenly arrested. In some cases it may be desirable to provide a similar pile wire checking means to arrest the pile wire carriage at it approaches the outward end of its movement, as indicated at the right Fig. 1. The construction of the dash-pot and plunger and the lever control of the plunger by thepile wire carriage may all be substantially'th e sameas already described for the like-mechanism disposed near the inner end portion of the pile wire movement. As indicated in Fig. 1, however, the dash pot, which is located below the outer end of-the carriage trough, may be secured to the carriage frame by a bracket 43 which may 44 or similar clampingmechanism. What is claimed is I 1. Inapile fabric loom, the combination-of a pile wire carriage, means forreciprocating be clamped about the dash-pot by a bolt the carriage to insert and withdraw pile wires, and a pile wire carriage check comprising a dash-pot and plunger, an actuator connected to one of said parts and operated byithe pile wire carriage near the end 'ofits movement in one direction to yieldingly overcome the combined momentum of the carriage and connected pile wire.

2.- In a pile fabric loom, the combinationof a pile wire carriage, means for reciprocating the ,carriageto insert'and withdraw pile w1res,-and a pile'wire carriage check comprising a dash-pot and plunger, a lever C0111.

nected. to one of said part-s andactuated by the pile wire carriage as it approaches the end of itstravel inone'direction to yieldingly overcome the combined momentunrof' the carriage and connectedzpile wirep 3.- In a pile fabric loom, the combination ofa pilev wirei'carriage, means for reciprocat-ing the-carriage to insertnand withdraw pile wires,fand a'pile wire carriage check comprising a dash-pot-and plunger, an actuator connected to one of said parts and operated by the pile wire carriage near the end of itsmovement in one direction to yieldingly overcome thecombined momentum of the carriage and connected pile wire, and a conical spring between the dash-pot and plunger permitting substantiallyfull stroke of the plunger into the dash-pot and then returning e the parts to initial position. v

4. In a pile fabric loom having a pile wire carriage which is positively reciprocated to insert'a pile wire into the shed and withdraw another pile wire from the fabric, a carriage check comprising a dash-pot member and v plunger member, one of which is mounted in fixed position adjacent one end of the carriage travel, a lever connected to the other member and extending into the path of travel of the pile wirewcarriage for actuation thereby as the carriage nears the endof its travel.

5. In a pile fabric loom, the combination ofa pile wire carriage for inserting and withdrawing pile 'wires during weavin'g',;a dashpot mounted on the loom frame and having an outlet valve, a plunger having a stem extended therefrom, an automatic inlet" valve mounted on the plunger to open as the plunger is withdrawn from the dash-pot, a lever connected to the plunger stem and extending into the path of the carriage to be actuated by the latter near the end of its travel to yieldingly overcome the momentum of the carriage and connected pile wire that the loom may. be operated'at'hi h speed. V

6. In a pile f abric loom, the combination of a pile'wire carriage for inserting and withdrawing pile Wires during. weaving, a dash- ,pot mounted on the loom frame andhaving an outlet valve, a plunger having a stem extended therefrom, an automatic inlet valve mounted on the plunger out of axialahnement with the stem to open as the plunger is, Withdrawn from the dash-pot, a lever con nected to the plunger stem and extending into the path of the carriage to be actuated by the latter near the end of its travel to yieldingly overcome the momentum of the carriage and connected pile wire that the loom may be operated at high speed;

7 In a pile fabric loom, the combination of a pile wire carriage, a carriage trough or guide for the carriage, means for rec1procating the carriage to insert and withdraw pile wires, a dash-pot and plunger below the carriage trough or guide, a lever pivoted between its ends and having one end extended into the path of movement of the carriage and its 0ppositeend adapted to cause telescopicv move-- ment of the dash-pot and plunger when the lever is actuated by the carriage.

8. In a pile fabric loom, the combination of apile Wire carriage, a carriage trough or guide forthe carriage, meansfor reciprocatneoted pile wires.

In testimony whereof, I have signed my ing the carriage to insert-and withdraw pile wires, a dash-potand plunger below the car- 9. In a pile fabric loom, the combination of V a pile Wire carriage, means for positivelyreciprocating the carriage to insert and with-.

draw pile wires, and means including adashpot and plunger for gradually easing up the momentum of the carriage and connected pile wire as they approach the endof a reciprocatlng movement. 1 1 i I 10.- In a pile fabric loom, the combination of a pile wire carriage, means for reciprocating the carriage to insert-and withdraw pile wires, a friction member to engage the carrlage near the end of lts movement,,and a pile wire carriage check comprising a dashpot and plunger, an actuator connected to one i of said parts and operated by the pile wire carriage near the end of its movement in .one direction to. yieldingly overcome the'combined momentumofthe carriage and conname to this specification.

Y -EDWIN W. STONE; 

